At one point of the debate, the Labour leader left the parliamentary chamber, but returned shortly afterward. Corbyn, a vocal critic of Israeli policy, has previously apologized for what he described as "pockets" of anti-Semitism in the party.

Criticism of Corbyn also came from across the aisle, with Conservative lawmaker Sajid Javid, the housing and communities secretary, saying the debate "won't perhaps be the most comfortable three hours of debate" for the Labour leader.

"We cannot and we must not ignore the particular concern with elements within the Labour Party, nor can we ignore the fact that this increasing concern has correlated with the current leader of the opposition and the wave of activists that have come with him," Javid said.

Jewish groups have organized protests to decry anti-Semitism among the Labour Party's ranks

Not the first time

This is not the first time Corbyn has come under fire. He has been criticized for his association with Paul Eisen, a known Holocaust denier, and described Hamas and Hezbollah, which oppose the state of Israel, as "friends."